(Q30597197)
Statements
1 reference
Scope of the COPD problem in North America: early studies of prevalence and NHANES III data: basis for early identification and intervention (English)
1 reference
Petty TL
1 reference
1 May 2000
1 reference
1 reference
117
1 reference
5 Suppl 2
1 reference
326S-31S
1 reference
Identifiers
1 reference
1 reference